Kalman filtering with measurement delay for electro-optical tracking systems

Electro-optical tracking devices in the television or infrared automatic tracking system, miss distance lag system overshoot increased, lengthened the transitional period, affecting the stability control system and reduce the tracking precision. Feedforward control technology is to improve the tracking accuracy and to maintain the stability of the system an effective way. The speed of introduction of the forecast information as feedforward control signals constitute the equivalent composite control can be approximated to achieve feedforward control technology. The filter for the synthesis of the target location information with lag, interference is the key problem of compound control technology. In order to obtain the high-precision forecasting velocity of moving target, Kalman filter with the measurement lag is designed. Forecasting velocity of moving target can obtain by forecasting the synthesis target position with measurement lag. The actual Electro-optical tracking equivalent compound control system simulation and experimental results show that the velocity of moving target can be forecasted by using the methods and tracking precision can be improved in servo-control system.